near salt lake city -- >> what happened? >> i slid off. >> reporter: the department of transportation sl putting up flashing signs to help warn travelers. when temperatures dropped and snow started falling, the cars started sliding. and this semi crashed off i-80. outside of denver, snowplows are trying to clear things up. here you see the snow getting worse, blowing across the road from the hillside below. lousy for drivers, but good times for sleigh riders and snowboarders. and take a look at these photos from northern arizona, low visibility on the roads near flagstaff. tonight, there are blizzard and winter storm warnings up for 17 states. some of those last until friday morning in maine. in the northeast cities, it will be rain. but winds tomorrow night could gust as high as 60 miles an hour. if you have a flight in and out of the northeast hubs tomorrow night, pack a lunch. there could be significant delays. >> mike seidel in oklahoma city for us tonight, thanks so much. >>> new details are emerging tonight about that